/Engine/Plugins/Runtime/MassEntity/Source/MassEntity/Public/MassRequirements.h
template<typename T> [FMassSubsystemRequirements](API\Plugins\MassEntity\FMassSubsystemRequirements) & AddSubsystemRequirement ( const [EMassFragmentAccess](API\Plugins\MassEntity\EMassFragmentAccess) AccessMode )